Act Premium For Web - Installation - Insert CD 2

Hi everyone, Im in the process of attempting to upgrade our APFW 2007 to APFW 2008. When I insert the first disc, it prompts me to insert disc 2. I do that, but all I can do is install SQL 2005. So after installing SQL 2005, I try disc 1 again, but just receive the prompt "Insert CD 2". Any ideas?